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This article analyzes "how to upgrade the Linux kernel in the right posture". The content is detailed and easy to understand, and friends who are interested in "how to upgrade the Linux kernel in the right posture" can follow the editor's train of thought to read it in depth. I hope it will be helpful to everyone after reading. Let's follow the editor to learn more about "how to upgrade the Linux kernel in the right posture".

How to upgrade the kernel of Linux system? Sometimes we will encounter some problems, such as the network card can not be used, the brightness can not be adjusted, the touchpad can not be recognized, and this may be the problem of the kernel. Upgrading the kernel may solve the problem.

First, check the Linux kernel version command (2 methods): cat / proc/version uname-an II, view Linux system version command (3 methods): lsb_release-a can list all version information: this command applies to all Linux distributions, including Redhat, SuSE, Debian … Wait for the release. The cat / etc/redhat-release approach applies only to Redhat-based Linux: cat / etc/issue this command also applies to all Linux distributions. Generally speaking, only the kernel downloaded from kernel.org and compiled and installed is the official kernel. Most Linux distributions provide a self-maintained kernel that can be upgraded through package management systems such as yum or rpm.

1) # Import the public key of ELRepo software repository

Rpm-import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

2) # install the yum source of the ELRepo software repository

Rpm-Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm

3) # install mainline kernel (ml=mainline) 4.14.11

Yum-enablerepo=elrepo-kernel install kernel-ml

4) check the available kernel of the system and set the startup item

Sudo awk-F' $1percent = "menuentry" {print iTunes + ":" $2}'/ etc/grub2.cfg

There are three cores on the machine. We want to use the version 4.20, which can be done with the grub2-set-default 0 command.

Generate grub configuration file

Grub2-mkconfig-o / boot/grub2/grub.cfg

5) restart the system and verify

Uname``-which versions of aLinux are available in Linux: Deepin, UbuntuKylin, Manjaro, LinuxMint, Ubuntu and other versions. Among them, Deepin is one of the best-developed Linux distributions in China; UbuntuKylin is a derivative release based on Ubuntu; Manjaro is a Linux release based on Arch; LinuxMint's default Cinnamon desktop is similar to Windows XP's easy-to-use; Ubuntu is the Linux operating system based on desktop applications.

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